用于乳腺检测的多通道扩散光学层析成像系统  

Multi-channel diffuse optical tomography system for galactophore inspection

作　　者：刘维[1] 高峰[1] 赵会娟[1] 徐可欣[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津市300072

出　　处：《医疗卫生装备》2007年第1期18-19,30,共3页Chinese Medical Equipment Journal

基　　金：国家重点发展计划973(2006CB705700);国家自然科学基金(60578008)共同资助。

摘　　要：基于光子计数原理,研发了一套用于乳腺检测的多通道连续光(CW)扩散光学层析成像(DOT)系统。系统采用了“无间歇可调宽度滑动门计数器”以动态记录信息。每个滑动门宽可以从50μs变化到十几秒,相应地,根据预设门的数目,总测量时间跨度为几毫秒至几十秒。数据传输及系统控制应用通用串行总线(USB)2.0接口,增强了系统的可扩展性,可以满足不同空间分辨率的需要。Based on photon counting mode, a multi-channel continuous-wave （CW） diffuse optical tomography （DOT） system is designed for galactophore inspection. For the acquisition of dynamic information, the instrument adopts the non-intermittent counters to achieve the function of width-adjustable moving gate. The width of the moving gate can be changed from 50 microseconds to about 10 seconds, and correspondingly the total temporal span of the measurement ranges from several milliseconds to tens seconds, depending on the preset gate number. The data transfer as well as the system control is through the universal serial bus （USB） 2.0 technique, with which the system can readily extended for a variety of applications requiring different spatial resolution.

关 键 词：连续光 扩散光学层析成像 光子计数 滑动门 USB2.0 

分 类 号：TH789[机械工程—仪器科学与技术]